1903.] Hay, North American Cretaceous Fishes. 47 



Loomis shows that this bone must have been quite hke that 

 of A. favirostris , in both form and sculpture. 



Cope's type of A. evoliitus was, according to Mr. C. H. 

 Sternberg's diary of his expedition of 1877, found near the 

 Hue between Lane and Gove counties, Kansas. It is now 

 No. 2101 of the American Museum of Natural History. 



ELOPID^. 



Spaniodon simus Cope. 



Plate IV, Figs, i and 2. 



Spaniodon simus Cope (E. D.), Bull. U. S. Geol. and Geog. Surv. Terrs. 

 IV, 1878, p. 69. — Woodward (A. S.), Cat. Foss. Fishes, IV, 1901, 

 p. 53. — Hay (O. p.), Bibliog. and Cat. Foss. Vert. N. A. 1902, p. 

 391- 



Illustrations are herewith presented of the specimens from 

 which Professor Cope drew his description of this species. 

 He has mentioned the possession of three specimens, of which 

 one, said to be nearly entire, served as his type. These speci- 

 mens are now in this Museum. Fig. i, PI. IV, is taken 

 from No. 2508; Fig. 2 of the same plate, from No. 2509. 

 On the block containing the latter specimen are remains of 

 one or more fishes lying behind and above the fish represented 

 on the plate, but it is doubtful whether or not they belong to 

 the latter. In any case the vertebras are all wanting. Yet it is 

 from this fish that most of the description of the head is derived. 

 Both specimens are labelled by Cope as being his types. 



Little criticism can be made on Cope's description. To the 

 writer it appears evident that the lower portion of the body was 

 scaled. The dorsal and anal seem to have had each about two 

 rays fewer than the numbers given in the original description. 



The number of vertebrae in this fish is less than in any of 

 the other described species. 5. laius (Agassiz) is stated by 

 Dr. A. S. Woodward (Cat. Foss. Fishes, IV, p. 53) to have 

 50 vertebras, whereas the present species has only 45. 



The depth is contained in the length to the end of the 

 vertebral column three and one-half times; the length of 

 the head in the same distance about three and one-third 



